package com.atguigu.tingshu.album.api;

import com.atguigu.tingshu.album.config.MinioConstantProperties;
import com.atguigu.tingshu.common.result.Result;
import io.minio.*;
import io.minio.errors.MinioException;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.UUID;

@Tag(name = "上传管理接口")
@RestController
@RequestMapping("api/album")
//@RefreshScope  //动态读取配置类中的数据实现热部署 + @value注解 和@configurationproperties注解相同
public class FileUploadApiController {

    //使用软编码读取配置文件中的地址
    //@Value()
    @Autowired
    private MinioConstantProperties minioConstantProperties;

    /**
     * @param file 文件上传的时候，前端会在页面组件封装一个name属性；这个属性是什么，MultipartFile对象的名称就是什么
     * @return
     */
    @Operation(summary = "文件上传")
    @PostMapping("/fileUpload")
    //专门处理文件上传的类为MultipartFile
    public Result fileUpload(MultipartFile file) {

        //返回数据的时候，考虑返回值，上传图片返回的是url地址
        String url = "";

        //调用minio的上传api
        try {
            // Create a minioClient with the MinIO server playground, its access key and secret key.
            MinioClient minioClient =
                    MinioClient.builder()
                            .endpoint(minioConstantProperties.getEndpointUrl())
                            .credentials(minioConstantProperties.getAccessKey(), minioConstantProperties.getSecreKey())
                            .build();

            // Make 'asiatrip' bucket if not exist.
            boolean found =
                    minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioConstantProperties.getBucketName()).build());
            if (!found) {
                // Make a new bucket called 'asiatrip'.
                minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioConstantProperties.getBucketName()).build());
            } else {
                System.out.println("Bucket " + minioConstantProperties.getBucketName() + " already exists.");
            }

            // String name = atguigu.jpg   indexOf,lastIndexOf,substring,equals,compareTo,trim,replaceAll,split
            String myFileName = UUID.randomUUID().toString().replaceAll("-", "") + file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf("."));
            System.out.println("myFileName = " + myFileName);

            // Upload known sized input stream.
            minioClient.putObject(
                    PutObjectArgs.builder().bucket(minioConstantProperties.getBucketName()).object(myFileName).stream(
                                    file.getInputStream(), file.getSize(), -1)
                            .contentType(file.getContentType())
                            .build());
            //返回数据url，没有赋值; url/bucketName/fileName
            url = minioConstantProperties.getEndpointUrl() + "/" + minioConstantProperties.getBucketName() + "/" + myFileName;
            System.out.println("url = " + url);

        } catch (Exception e) {
            System.out.println("Error occurred: " + e);
        }

        //返回数据
        return Result.ok(url);


    }

}
